Type-wkiteb



A. C. ROEBUCK.

IYPE WRITER.

APPLICANON min nmza. m4.

Patented Aug. 1, 1916.

3 SHEETS-SHEET l- BEL-illlllil 5 I E J I Miam A. 3. 9053mm TYPE WRITER.

APPUCATION HLED MN. 28. I914.

Patented Aug. 1, 1916.

3 SHEETS-SHEET 2.

A. C. BOEBUCK.

TYPE WRITER.

APPHCAYION FILED MN. 28. 19M. 1,193,073. Patented Aug. 1, 1916.

M 3 SHEETS-SHEET 3. 7

.accoinplishmcnt of ALVAH C. ROEBUCK, 0F WOODSTOCK. ILLINOIS.

TYPE-WRITER.

Bpecification of Letters Yatent.

Patented Aw. 1.1916.

Application filed January 28, 1914. Serial No. 814,850.

To all whom it may concern:

Be it known that I, Anviii C. ROEBUCK, a citizen of the United States,residing at 'oodstock. in the county of McHenry and State of Illinois.have invented certain new and useful Improvements in Type-\Vriters, ofwhich the following is a specification.

This invention relates to a typewriting machine and more particularly tothat portion hIiOWIl as a tabulator.

The principal object of the invention is to provide. a new and improvedformof mechanism of this class which is simple in construction andeffective and efficient in operation.

Among the objects to be accomplished are the provision of means torelease the escape ment mechanism when the typewriter is operated; toprovide a combined tabulator and margin stop; to provide improved meansfor preventing the rebound of the carriage; to provide a construction bymeans of which the tabulator stops may be easily locked in position; andto provide a yielding connection whereby the tabulator stop will bepressed into engaging position if the stop proper should engage the tipof one of the stops to prevent it temporarily from being, forced intothe engaging position.

For the attainment of these ends and the other new and useful objects.the invention consists in the construction. combination and arrangementof the several parts generally shown in the accompanying drawings anddescribed in the specification. but more. particularly pointed out inthe appended claims.

in the drawings: igure 1 is a rear elovation of a tabulator mechanismconstructed in accordance with the principles of my invention as appliedto a typewriter. part of the typewriter being omitted for clearness.Fig. 2 is a side elevation of the tabulator key levcr. Fig. 3 is a planview of the tabulator mechanism. Fig. l is a perspective view of one ofthe tabulator stops. Fig. 5 is a perspective view of stop levers. Fig.i) is a perspective view of the spring holder and limiting membermounted on one end of the tabulator bar. Fig. T is a detail view of aportion of a ta ulator mechanism with the .movable margin stop engagingthe fixed 8 is a detailsectional margin stop. Fig.

n of Fig. i), Fig.

view talvcn on the line i is a detail sectional ew taken on the linc .lof Fig. and Fig.

sectional view taken on the line 10-10 of Fig. 3. I

In this invention the tabulator action is produced by drawing theordinary pawls of the escapement mechanism from engagement with theescapement feed wheel whereby the typewriter carriage may move freelyfrom right to left, in the direction of the ordinary feed until anadjustable tabulator stop mounted on the tabulator bar engages with themovable tabulator stop which is operated by the tabulator key.

Inthis embodiment of the invention a carriage frame 5 is mounted fortransverse movement in a typewriter frame designated generally by thereference numeral 6. At the extremities of the carriage 5 are end plates7 to which is connected at fixed rod 8 and a pivotally mounted tabulatorbar 9. Mounted upon this tabulator bar (considered from the front of themachine) is a left hand margin stop 10 and a right hand margin stop 11.The tabulator bar is formed with teeth 12 on opposite sides of the barand on top with characters indicating the position of the teeth withrespect to .the ends of the carriage, or point. The margin stops 10 tothe printing and 11 are provided with a pivoted spring-pressed engaginglever 13 by means of which their position may be readily adjusted andfixed 'with respect to the tabulator bar. Also mounted and adjustable onthe tabulator bar 11 are a number of tabulator stops 14, one of which isclearly shown in Fig. 4. These stops consist of members with a slot 15and are adapted to be inserted over the bar with the slot engaging theteeth thereof. The upper end of the stop is provided with a perforationit) by means of which it may be easily grasped and removed from thetabulator bar. ()ne of the extremities is formed with a projection 17which, when the tabulator bar is in position, engages beneath the rod 8which extends between the carriage ends 7 and prevents the removal ordisphn-emcnt of this tabulator stop with respect to the tabulator bar.To position or remove the stop the tabulator baris rotated to theinclined position shown in dotted lines by Fig. 9. whereupon the stop 14will just clear the rod 8 and permit the free movement thereof withrespect to the tabulator bar.

In order to hold the tabulator bar n i0 is a detail proper position astop member 18 is p051 tioned upon the bar by means of a slot 19, andthis member is formed with two lateral project-ions both adapted toengage the rod 8, a shown more clearly in Fig. 10, one of the steps 20engaging the rod to limit the rotation of the tahulator bar in onedirection, as shown in dotted lines by Fig. 10, and the other projection'21 being adapted to normally engage the rod 8 to limit the movement ofthe tabulator bar in the other direction. The tahulator bar is held inthis latter position by means of a spring 22, one end of which isattached to a hook 2 5 of the member 18 and the other end to a fixedmemher 2- secured to the carriage frame.

Pivotally mounted on the end members 7 are arms and 26, the latter ofwhich is provided with an engageable army 27 projccting above the endplate 7. These arms support a carriage rack 28 and the rack is held inposition by means of a spring 2E) attached to one of the arms 26 and toa fixed point 30 of the carriage frame. The downward movement of thecarriage rack is adjustable and is limited by means of an adjustingscrew 31 inserted through one of the arms 26 and bearing upon thetabular bar 5) with a locknut 32 for iolding it in any adjusted positionAn escapement pinion 33 is mounted in the frame and meshes with thecarriage rack 28. Secured to or formed integral with the escapemcntpinion is an eseapement wheel 34.

A tabulator key lever 35 is pivotally mounted in the frame of themachine with the forward end preferably at the side of the characterkeys of the typewriter. A le-- ver 36 is pivotally mounted on the rearframe of the machine, and connecting this lever and the key lever 3.7 isa link 37. Mounted on a pivot pin 38 at the rear of the machine andextending toward the lever 36 is a movabletahulator stop 3!? having anup-turned tabular stop proper 4U. (onnected to or formed integral withthe tabulator stop and inclined from the free extremity toward thetabulator stop proper is a rebound check it, the end of which isslightly less in height than the tabulator stop 40 and is spaced from itslightly more than the thickness ofthe tabulator stops 1 4 which aremounted on the tabulator bar. Extending laterally from the pivotedtahulator stop 3!) is an arm 42. Resting upon this arm is a member 43freely mounted on the pivot pin 38 with its free end extending adjacentthe free end of the tahulator stop 35). and being provided at its freeend with a slot This member 43 is formed with an arm 4.3 extendingbeneath the arm 42 of the tabulator stop 3!). and a spring 46 isdisposed bet ween the arms 42 and tending to press them apart. or. inother words. tending to hold the member 435 in contact with the arm -12.At the end of the lever 36 is a pin 47 which is adapted to enter theslot i of the member 43 whereby this member may he raised, and at thesame time causing the [abulator stop 39 to be raised through the spring46 so that the tabulator stop proper 40 will be moved into the path ofthe tabulator stops H on the tabulator Projecting laterally from the arm4?) of the member 13 is a pin 49 for controlling the escapement pawl.Also mounted on the pivot pin 38 is an arm 66 having a stop proper 67disposed in close proximity to the stop proper 40 of the tabulator stop35). This arm 6,6 is provided with a notch 68 in its upper surface, andmounted on the frame of the machine is a plate (99 with a projectingportion 70 which adapted to engage in the notch 68 and hold the arm (36in fixed position with respect to the tabulator bar against upwardmovement. The stop proper (i7 is normally in position to engageprojecting member 71 on the margin stop 10 '(see Fig. 7). The end of thetabulator stop 35) may also b beveled at 72 as a continuation of therebound stop, if desired.

At one end of the tabulator bar 5*. (see Fig. 1) it is formed with arecess 9" into which an adjustable pivot screw c extends, and seated inthe recess is a spring T with a ball T between the outer end of thespring and abutting the end of the pivot s row 7 to prevent the springfrom resisting the turning movement of the tabnlator bar. should thespring catch in the bottom of the recess 1 To control the escapcmentmechanism a member 50 is disposed below the escapement .wheel 34 andmounted upon this menr her is a pawl :Ll having a tooth 5'3 adapted toengage the escapcmeut wheel. being pro- 'i'iiittl with a slot .35 topermit the longitudinal movement of the pawl. the slot 3: and opening:34 adjacent the tooth to permit both the longitudinal movement of thepawl and a movement toward and fr m the cs apement wheel. Pins 05 and 5bare secured to the member 50 and project through th openings 53 and 534.respectively. to permit the longitudinal movement of the pawl withrespect to both pins and a'pivotal movement of the pawl toward and fromthe escape-ment wheel about the pin as an axis. A single spring I)? isattaihed to a projection of the pawl and to the memher 50 which tends topress. the tooth up-- wardlv in engagement. with the wheel 34, and alsoto move the pawl in the direction of the spring in the openings. Thispawl is also formed with an arm 59 adjacent the forward end. and prjecting through a slot (30 in the member 50 is a pin 31 mount ed on onearm of a lever 63;" which is also pivoted in the member .M the pin beingadapted to engage the arm 59 of the pawl, and by the movement of thelever 62 to move the pawl downwardly or out of engagement with theescapemcnt wheel 3-1. The other arm (33 of the lever 62 is adapted to beengaged by the pin 49 of the'memher 43 of the tabulator mechanism, and.a spring 64 attached at on end to the member and at the other end to anarm of the lever (32 tends to press this lever 50 that the pin (31 willnot interfere with the ordinary action of the pawl 51.

In operation it is necessary only to depress the forward end ofthe'tabulator key '35 whereupon the link 37 will draw the end of thelever 30 downwardly. causing the other end of the lever to moveupwardly, carrying with it the member 43 by reason of the pin and slotconnection therewith. This upward movement of the free end of the member43 causes a resilient upward movement of the tabulator stop lever 39 andthe upward movement of the member l3 moves the pin 49 upwardly inaccordance therewith. This pin 49 engages the levei"(r2.' causing thepin til thereof to move downwardly in the shit (50 eng'agime theprojection 59 of the pawl 51 and moving the tooth 52 of the pawl out ofengagement with the escapement wheel 34. This permits the spring ormotor of the typewriter to drawthe typewriter carriage across the frameuntil one of the tabulator stops 14 engages with the movable tabuhv torstop 40, whereupon the tabulator keyis released, the escapement wheel isengaged by'the pawl and the tabulator stop is-moved ollt of engagingposition with respect to the stops on the tabulator bar and the ordinaryfeeding operation of the machine may be resumed. If it happens that thetop of the tabulator stop proper It) should engage the end of one of thetabulator stops H when the tabulator key is operated the spring 46will'be slightly compressed and the escape wheel will be released asbefore so that as soon as the carriage and the tabulator bar is movedthe tabulator stop proper 40 will be forced into position to engage thenext tabulator stop on the tabulator bar, the added compression ofthespring aiding to effect this movement inore'rezulily.

The function of the stop 40 is to engage the stop members 14. .\Vhentliexstop lever 39 is raised into position through the action of lever43 and spring 46. the inclined stop -ll is the first element to engageone. of the stops 14. The engagement with stop 14 on the inclined stop41 presses lever 39 down ward until stop 14 reaches the slot between thestops l0 and 41. where it drops into position and prevents the carriagefrom either prevent the heavy impact or'sudden stopletter spaces back ofthe point where it Wasintended to stop. namely. the point wherein thestop 14 would be in direct engagement with the stop 40 on the lever 39.

' \Vhat I claim is:

1. In a tabulator for typewriters, a lever" pivoted on one side of thetypewriter, and

an arm pivoted on the other side thereof having a tabulator stop properdisposed between the pivots of the arm and the said lever and the armbeing loosely connected with. the adjacent end of the lever.

' 2. In a typewriter machine. a tabnlator com 'irising a lever pivotedat one side there of, an arm pivoted at the opposite side and extendingtoward the 'lever, and a yielding 1 connection between the arm and thelever whereby the upward movement of the inner end of the lever tends tomove the said arm resilientlyupward. Y i

3. In a typewriter, tabulator mechanisin comprising, alever, a pivotedarm having a tabulator stop proper disposed between the pivots of thearm and said lever, a member pivotedadjacent the pivot of the arm andloosely connected at its free end to the adjacent end of the lever, anda resilient connection between the said member and the arm which carriesthe tabulator stop proper.

4. In a typewriter, tabulato'r mechanism comprising a lever pivotallymounted at one side thereof, an arm carrying a tabulator stop properpivotally mounted at the other side with the stop proper disposedbetween the pivot points of the arm and lever, a member pivotallymounted on the same side as the said arm. a pin and slot connectionbetween the member and one end of the lever, and a spring between thearmand inember \\'he|cl| the arm is raised resiliently when the memberisraised.

5. In a typewriter. taluilator mechanism comprising' a lever mounted atone side of the machine. an arm mounted at the other side thereofcarrying a tabulator stop proper and formed with a lateral projection. amember pivotally mounted at the same side of the machine as the armadapted to rest on the lateral projection of the arm and ha vin; adepending Pfll'thIll$tl1tllllg below the lateral wje.ctiou-. a looseconnection between the free-end of the 'memben and the lever. and aspring disposed between the projection of said member and the lateralprojection of said arm tending to press them vieldingly apart therebvholding the mem: ber vieldingly against the lateral projection of thearm.

mounted at the other side of the center of the machine carrying a stopproper disposed substantially at the center of the machine, a

'- member pivotally mounted at the same side .whereby the arm isresiliently raised when of the center as the arm and having a looseconnection with one extremity of the lever, and resilient meansconnecting the arm and the member whereby'the movement of the leverproduces a yielding movement of the arm in one direction and a positivemovement in the other direction.

7. In a typewriter, tabulator mechanism comprising a lever pivotallymounted at one side of the machine, a pivotally mounted key lever, alink connecting the key lever and the other lever, an arm pivotallymounted on the side of the machine opposite the first named lever with atabulator stop proper disposed. between the pivot points of the arm andlever, a member pivotally mounted on the same axis of the arm andresting on the arm, a pin and slot connection between the member and thefirst named lever, the member being provided withca depending portion,and a spring disposed between the depending portion of the member andthe a m tending to hold the member on the arm the free end of the memberis raised by the operation of the lever.

8. In a typewriter, tabulator mechanism comprising an arm pivotallymounted at one side of the center of the machine with a tabulator stopproper disposed at the center thereof, a member pivotally mounted on thesame side of the machine as the arm. and sup- ,ported by the arm,yielding means tending to hold themember on the arm, and means tooscillate the free end-of the member to force the armyieldingly in anupward direction and positivelydn a downward direction.

9. In a typewriter, tabulator mechanism comprising a tabulator barmounted on the typewriter carriage, adjustable tabulator stops mountedon the bar, margin stops on the bar, an arm ,pivotally mounted at oneside of the machine with the tabulator stop proper extending upwardlynear the center, an operating lever, and means forming a connectionbetween the arm and the lever for resiliently raising the arm when thead jacent extremity of the lever is raised and for positively depressingthe arm when the adjacent end of the lever is depressed. the tabulatorstop proper being adapted to engage one of the adjustable tabulatorstops when raised by the lever.

10. In a typewriter, tabulator mechanism comprising a tabulator bar,tabulator stops adjustably mounted on the bar, margin stops on the endsof the tabulator bar, an arm mounted at one side of the center of themachine having ajtabulator stop proper substantially at the center,anotherarm with a stop portion in proximity to the tabulator stopproper, one of said stops in its normal position beingad'apted to engageonefof the margin stops but not the tabulator stops, an operating levermounted at the other side bf the center of the machine, and meansforming a connection between the operating lever and the other one ofsaid arms to move it resiliently in an upward direction to engage thetahulator stops and positively in a downward osition therefrom.

11. n tabulator mechanism, a tabulat'or bar with toothed sides, supportsin which the bar is pivoted on a longitudinal axis, a rod mounted insaid supports parallel to the bar, and tabulator stops adjustable on thebar with a projection to engage beneath the rod to hold them in positionon the bar.

12. In tabulator mechanism, the combination with a tabulating barrotatable about a longitudinal axis, a rod parallel to said bar, andtabulator stops adjustable on the bar and provided with a lateralproection to engage beneath the rod to hold them in position, the saidprojection being adapted to clear the rod when the bar is ro tated,whereby they may he placedon or removed from the bar.

l3. In typewriter tabulator mechanism, a tabulator stop consisting of aslotted member with an outside lateral extension from one of theextremities, and a fixed bar below which the said lateral extensionengages to hold the tabulator stop in position. i

14. In tabu-lating mechanism a tabulator bar rotatable about itslongitudinal axis, a

rod parallel therewith, a 'tabulator stop adjustable on the bar having aslot with a pro ection from one of the extremities which forms the slotto engage beneath the rodv for preventing removal of the stop and havinga finger-hold portion above the tabulator bar by means of which the baris rotated to free the projection from the rod 1' re movingthe stop fromthe bar.

15. In tabulator mechanism, the combination with a tabulator barrotatable about a longitudinal axis, of stops adjustable on the bar,'arod parallel to the bar, projections from the stops adapted to en gagebelow the rod when the stops are in position on the barand removablefrom the stop proper at its free end and with an inclined portion infront of the tabulator stop, the extremity of which is spaced from thestop proper, and means to press the arm and the stop proper resilientlyinto engaging position for the adjustable stops.

17. In tabulating mechanism, the combination with a tabulator bar. oftabulator stops adjustably mounted on the bar. means to lock the stopsreleasabiy in position on the'bar, a pivotally mounted arm having a stopproper movable to engage the stops on the bar, an inclined projection onthe said arm, the highest part of whirh terminates a slight distance infront of the stop proper, and means to press the arm resiliently upwardto place the stop proper in engaging osition whereby the tabulator stopson the liar will ride on the projection and engage in the space betweenit and the stop proper to prevent rebound.

18. In a typewriter, tabulator mechanism comprising a tabulator bar,tabulator stops adjustable on the bar, a margin stop mounted adjustablyon the bar, an arm piv otally mounted on the frame of the machine withthe stop proper adjacent the free end, a projection on the margin stopto engage the stop proper on the arm, another arm with a tabulator stopproper and a projection at the side of the arm inclined upward from theend toward the stop proper and terminating at a distance therefromsubstantially equal to the width of the tabulator stops and out of thepath of the margin stop but in the path of the tabnlator stops, andmeans to pre s the second arm resiliently upward to plamthe stop properin the path of the tabulator stops whereby the inclined projection willprevent the rebound of the carriage.

If). in ty a-writer tabulator inw'hanism, a pivoted arm having atabulator stop and an integral retardin; portion in advance of the stopinclined toward the stop but I)2l(('(l therefrom adjarent the stop.

20. In tabulator mechanism, a earria e w th end supports. a tabulatorbar pivotal y mountcd at its ends in said supports, a rod mounted insaid supports parallel to the bar, and tahulator .-tops adjustable onthe tabulator bar with a projection to engage beneath the rod to holdthem in position on the bar when it is rotated in a predeterminedposition.

21. In typewriter tairudator mechanisn'i, a tabular-tor bar, stopsadjustable on the bill, a movable springpressed arm having a tabulatorstop proper to engage the adjustable stop on the tabulator bar, and withan inclined integral portion on the arm in advance of the stop properthereon and space slightly therefrom to engage and retard the tabulatorstop and bar and to engage the stop on the tabulator bar in the saidspace when the said arm is raised in position to engage the stop on thetabul'ator bar.

in tabulator mechanism the combination with a tabulator har rotatableabout if longitudinal axis, of stops adjustable on the bar, a rodparallel to the bar, projections from the stops adapted to engage belowthe rod and removable from the bar onlywhen it is rotated upon its axisso that the projections clear the rod, means in connection with the barto limit its movement about its own axis. and resilient means tending todra'w the bar into position whereby the stops on th bar will be lockedin position.

23. In tabulator mechanism, a carriage with end supports. pivotsprojecting inwardly therefrom, a tabulator bar with recessed ends freelymounted on said pivot, a spring in the recess at one end of the bar, anda ball interposed between the spring and the pivot to provide anabutment for the end of the spring whereby the rotation of the bar aboutit v pivot is not resisted by the spring.

in testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 22nd day of January, A.I). 1914.

A LVAH C. ROEBUCK.

\Vitnesses:

N. W. LEATING, J l". Swairrs'rizn'r.

